# Mass, length, surface area, volume, time and pressure

MateriBelaja.Co.id In this occasion we will fully discuss unit conversion which includes understanding and types of unit conversions along with images and examples as well as the formula for the unit itself, for more details see the discussion below.

## Definition of Unit Conversion

Unit conversion In general, it means changing the value from one unit system to another unit value.

In general, unit conversions never change the value of a quantity. Unit conversion can be performed on the same unit system and on a different unit system.

Unit conversion within the same system, for example, wants to change a unit from the international system to another unit from the same system. In this unit conversion the conversion can use a conversion factor or with the help of a conversion scale.

Converting units to a different unit system means that if you are going to change or convert a value from one unit system to another unit system. For example the English system to the International System of Units or vice versa. Such unit conversion can be done using a unit conversion factor.

## Conversion factor

Conversion factors are used to change the units of a quantity without changing its value. The method consists of fractions where the denominator is the same as the numerator, but in different units. Due to the multiplication identity, the value of a quantity does not change as long as it is multiplied by one.

So if the numerator and denominator are the same, then the fraction will be equal to one. As long as the numerator and denominator are equivalent, then the value of the quantity will remain.

## Unit conversion types

Unit conversion has many types, converting one form to another is important in physics because physics requires calculations and measurements that require accurate and precise units. The following are the various unit conversions and their examples:

### Conversion of mass units

The unit of mass is often associated with weight, but actually the unit of mass is different from weight. the mass unit is often used to measure weight, the difference is that if the mass unit the value never changes, while the weight can change in value because it is influenced by the earth’s gravity.

The method of calculating the mass unit conversion is almost the same as the length unit conversion. The highest mass unit is converted to the lowest value of the mass unit, then the calculation method decreases, each time it goes down a level multiplied by 10. Meanwhile, from the lowest value to the highest unit value of mass, it will increase and each time it goes up a level divided by 10.

### Convert length units

Converting units of length means changing one form of unit of length to another unit of length. Starting from the unit that has the longest value to the shortest

The unit length conversion formula is that if the unit value increases, it is converted to a smaller unit of length multiplied by 10 each time it decreases. If it changes in the form of units whose value is higher, or increases. Then it will be divided by 10 for each level.

For example, from 1 kilometer converted to 1 meter. Every time you go down a level you will be multiplied by 10, up to 1 x 10 x 10 x 10 the result is 1000 meters. The conversion value of the length unit from 1 kilometer converted to meters is 1000 meters.

### Time unit conversion

Converting time units, i.e. changing time units to other time units, starting from the lowest to the highest value or vice versa.

Example:

### Area Unit Conversion (Square)

Area unit conversion is a way to convert a large area unit to a smaller area unit value. Although almost the same as the unit of length, the unit of area is distinguished from the word square to describe the unit of area, denoted by m2.

The calculation method is almost the same as the unit of length. The difference is that every time you go down or up with a jump, you will be multiplied or divided by 100.

### Volume unit conversion

The unit of volume or what is commonly called cubic for the mention of the unit of volume. Almost the same as the area unit of a square. The difference is that the area of ​​the volume unit is marked with m3 and is read in cubic meters.

The calculation is almost the same as unit length and unit area, the difference is that every time you go down or up with a jump, you will be multiplied or divided by 1000.

Example:

• 1 km3 equals 109 m3
• 1 hm3 samadengan 106 m3
• 1 dam3 samadengan 103 m3
• 1 dm3 equals 10-3 m3
• 1 cm3 is equal to 10-6 m3
• 1 mm3 equals 10-9 m3
• 1 m3 samadengan 103 dm3
• 1 m3 is equal to 106 cm3
• 1 m3 equals 109 mm3

### Pressure unit conversion

The unit of pressure is often used to measure the strength of a liquid or gas.

The unit of pressure can generally be related to the unit of volume and the quantity of temperature or temperature. The higher the pressure in a place with the same content, the higher the temperature.

Example of calculating the conversion of different pressure units:

Atmosphere

1 Atmosphere is equal to 1.013 bar
1 Atmosphere is equal to 14,689 Psi
1 Atmosphere is equal to 101,300 Pascals
1 Atmosphere is equal to 1,013 millibars
1 Atmosphere is equal to 760 mm Hg or 760 Torr

Bar
1 bar is equal to 750 Torr or 750 mm Hg
1 bar is equal to 14.5 Psi
1 bar is equal to 100,000 pascals
1 bar is equal to 1000 millibars

Torr
45 Torr is equal to 60 millibars
45 Torr is equal to 0.05923001 bar or rounded to 0.06 bar
45 Torr equals 0.870 Psi
45 Torr is equal to 6,000 pascals

mm of Hg
1 mm of Hg equals 1 Torr
760 mm of Hg is equal to 1 atmosphere
760 mm of Hg equals 14,689 Psi
760 mm of Hg is equal to 101,300 Pascal

That’s the discussion about unit conversion, I hope it’s useful